Seventy-five years since the 'hardest day' of the Battle of Britain, eighteen Spitfires and six Hurricanes fly again over England to honour the courageous pilots, engineers, armourers, operations staff and ground crews who faced constant attack from the Nazi Luftwaffe Report by Kerrs. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn